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Finding the Fourth Proportional to 874,609.67, 1,206,548.73 and 511,808.90

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Solution

The fourth proportional to 874,609.67, 1,206,548.73 and 511,808.90 is: 706,054.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,609.67 : 1,206,548.73 = 511,808.90 : x
  2. Step 2: Convert to fraction form
    874,609.67/1,206,548.73 = 511,808.90/x
  3. Step 3: Cross multiply
    874,609.67x = 1,206,548.73 × 511,808.90
  4. Step 4: Simplify right side
    874,609.67x = 617,522,378,297.70
  5. Step 5: Solve for x
    x = 617,522,378,297.70/874,609.67
  6. Step 6: Final answer
    x = 706,054.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.